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DENVER (CBS4) - Poultry contaminated with Salmonella may be sold under other brands besides Foster Farms and may still be on store shelves.

The poultry contaminated with salmonella was packaged by Foster Farms and it was processed in three plants in California. Those plants will stay open after federal health officials with the USDA approved changes made to processing and inspections.

More than 315 people have gotten sick in 18 states since March. Four people to date have gotten sick in Colorado from the chicken.

So far Foster Farms has been the only name connected to the outbreak but a recent consumer report revealed a number of other major brands shoppers should watch out for including: Eating Right, Kirkland Signature, O Organics, Open Nature, Ralphs, Safeway Farms and Simple Truth Organic.

“Because Salmonella is not considered an adulterate they can’t recall it even though Salmonella is the number two cause of food poisoning in the U.S.,” said food safety advocate Rebecca Spector.

“Always wash your hands with soap and warm water, keep your food in the fridge until you’re ready to cook it and if you’re cooking poultry — and because we’re talking about salmonella — make sure the internal temperature reaches at least 165 degrees,” he said.

The tainted packages of chicken have code numbers p6137, p6137a and p7632. If you have purchased one of the tainted batches of chicken at King Soopers, the store says you can bring it back into their stores for a full refund.